Book digitized by Google from the library of the University of Michigan and uploaded to the Internet Archive by user tpb.
"Beweise" I-II published in Disquisitiones arithmeticae, Leipzig, 1801; III in Commentationes Societatis regiae scientiarum gottingensis, vol. XVI, 1808; IV-VI in Commentationes Societatis regiae scientiarum gottingensis recentiores, vol. I, 1811, and vol. IV, 1818
Notes
"Beweise" I-II published in Disquisitiones arithmeticae, Leipzig, 1801; III in Commentationes Societatis regiae scientiarum gottingensis, vol. XVI, 1808; IV-VI in Commentationes Societatis regiae scientiarum gottingensis recentiores, vol. I, 1811, and vol. IV, 1818.